Membrane oxygen process and system
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United States of America Patent
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-
Feb 9, 1993
Grant Date -
N/A
app pub date -
Nov 5, 1991
filing date -
Nov 5, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two stage membrane system is used for the production of oxygen from air. All or a portion of the feed air is passed to the permeate side of the second stage membrane as purge gas. The gas withdrawn from the permeate side of the second stage membrane is passed as feed gas to the first stage membrane, from which product oxygen is recovered.
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